title: Actinic keratosis: the key event in the evolution from photoaged skin to squamous cell carcinoma. Therapy based on pathogenetic and clinical aspects.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology*; D006801:Humans; D007642:Keratosis / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology*; D015595:Skin Aging / Q000187:drug effects / Q000473:pathology*; D012878:Skin Neoplasms / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology*; D014466:Ultraviolet Rays / Q000009:adverse effects